ultimatum
— Noun
– English
~ a final peremptory demand
ultimo
— Adjective
– English
~ in or of the month preceding the present one; "your letter received on the 29th ult"
ne plus ultra
— Noun
– English
~ the state of being without a flaw or defect
ultra
— Adjective
– English
~ (used of opinions and actions) far beyond the norm; "extremist political views"; "radical opinions on education"; "an ultra conservative"
Ultracef
— Noun
– English
~ a cephalosporin antibiotic (trade name Ultracef)
ultracentrifuge
— Noun
– English
~ a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins
ultracentrifuge
— Verb
– English
~ subject to the action of an ultracentrifuge
ultraconservative
— Noun
– English
~ an extreme conservative; an opponent of progress or liberalism